1992 Chevrolet Other brakes

Need to describe better what is happening. What car model do you have? What do you mean by "pull hard"? How do you know it's caused by the passenger side? I'm guessing by "bleeding the brakes" you released trapped fluid pressure, but that's just the first step in the diagnosis. Next, loosen the steel lines at the master cylinder. If that lets a sticking brake release, we have to discuss brake fluid contaminated with a petroleum product. Check the rubber bladder seal in the reservoir cap. If it's blown up and mushy, we have an expensive repair to talk about.